Mercruiser Boat clunks going in to gear and stalls

Bondo

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Apr 17, 2002
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Question is that when I spin the prop the opposite direction it doesn't spin freely but spins and there are rough spots for lack of better words. Is this normal or should the prop spin like it's in neutral?

Ayuh,.... Exactly,..... In neutral, the prop should spin reasonably freely,....

In gear, it should lock up in 1 direction, 'n ratchet in the other direction,...
 

jdelisle

Seaman Apprentice
Joined
Sep 27, 2004
Messages
35
Today I raised the idle by 50-100rpms. I disconnected the shift interrupter switch and and with the engine off I was reading continuity in both forward and reverse. I also started the engine and shifted in in reverse with the switch disconnected and it didn't stall. I check the adjustment of the cable it it was correct. I also tested the switch with the engine running and fully depressed it killed the motor but partially depressed the motor stutters.
I adjusted the front pin up from the middle to the top of the slot. It wasn't at the bottom of the slot like I saw in most videos. This and the idle adjustment seems to have corrected the issue.

My concern is since I made this adjustment will the shift interuptor engage when it's in the water like it's suppose to. Is there a way to check it or will the boat just not come out of gear?
 

alldodge

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Mar 8, 2009
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Has to be tested in the water, just try to be in a safe location and be ready to turn the key OFF if it doesn't go into neutral.
 

jdelisle

Seaman Apprentice
Joined
Sep 27, 2004
Messages
35
This will be tomorrows water test. Is it unusual to put the pin up so high? I know it means cable has stretched is will need replacing in the future and probably when the bellows are done.
 

alldodge

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This will be tomorrows water test. Is it unusual to put the pin up so high? I know it means cable has stretched is will need replacing in the future and probably when the bellows are done.

I adjusted the front pin up from the middle to the top of the slot. It wasn't at the bottom of the slot like I saw in most videos. This and the idle adjustment seems to have corrected the issue.

Just noticed you said top of pin. It should be adjusted like this in neutral

shift_interrupt.jpg
 
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